Pikedale    (32km north-west of Stanthorpe). Records show that the    auriferous reefs were small but    fairly rich. They were worked by small parties, and were    generally abandoned about the 30m    level. No general statements can be made regarding future    prospects of these mines as the factors    leading to their closure are unknown.    Near Warroo    32km further west, a gold-bearing lode was exploited to a    reported depth of 60m    until local smelting became unpayable.    Texas    (85km by road west of Stanthorpe). The old Silver Spur    Mine, 11km east of Texas,    produced considerable amounts of silver, lead, gold and    copper, the zinc contents remaining in the    slag dumps. Existing workings, to 152.5m depth, offer    possibilities for further prospecting, but    unwatering and reconditioning would be necessary. In    recent years interest has been displayed    periodically by various mining organizations.    Warwick    Fields.     Warwick (256km by rail or 161km by road south-west from    Brisbane) is the base    for the following gold fields     Talgai (34km west-south-west), Leyburn (45km north-west),    Canal    Creek (45km south-west), Lucky Valley (19km south-east),    Palgrave (34km south-west) and    Thanes Creek (39km west). With the exception of     Canal Creek, which was purely an alluvial    field, the history and present condition of these old    fields are very similar. They have been    practically worked out as far as alluvial gold is    concerned. In the primary deposits, payable gold    values occur in narrow shoots in small fissure veins    which could not at the time of working be    profitably followed much below 30m Where there is reason    to believe that the shoots were not    worked out further prospecting in depth might be    justified.    Moreton District.    The low-grade gold deposit at Kingston (24km south of    Brisbane) was worked for a number of years by a syndicate, but    is now deserted. Gold occurrences near Ormeau (48km south of        Brisbane), and Camp Mountain (16km west) do not offer much    inducement for further prospecting.    North Arm    (117km by rail north of Brisbane). The discovery of    auriferous quartz reefs in a hitherto unproductive series of    volcanic rocks was made in 1929. Company operations were    carried on till 1938 within a relatively small area, but all    efforts to locate workable auriferous deposits further afield    resulted in failure. It is of interest to record that the free    gold is so highly alloyed with silver that it is almost white    in colour and is associated with the rare mineral    naumannite (selenide of silver).        Gympie    (170km by rail north of Brisbane) The highly auriferous    reefing area at Gympie was    confined to a heavily faulted strip about 3km long by 1km    wide This small area has been responsible for a large    proportion of the fields production. Operations were    ultimately continued to depths of considerably over 600m on the    Monkland end of the field. The mines of the main belt form an    extensive connected group, now filled with water. Owing to the    prohibitive expense involved in dewatering and reconditioning    these mines, it is doubtful whether any of the connected group    of workings can be deemed worthy of further consideration.    Since the decline of major mining operations -about 1917,    numerous attempts have been made to exploit blocks of shallow    ground. Relatively few of these attempts have met with success.    Far-many years production was maintained by cyanidation of old    tailings, but this has now ceased.    Mary Valley    (south from Gympie). Alluvial and surface gold deposits    were originally worked on a    small scale near 1mbil (40km by rail from Gympie) and a    small production has been won    intermittently from quartz veins occupying minor fissures    in granite.    Glastonbury    (13km west of Gympie). Gold-bearing quartz reefs    occupying fissures occur in altered sedimentary rocks near a    granite contact. They vary in thickness from a few cm to    about    1m. The output from the field has not been large.    Small-scale operations were formerly conducted by a company    which operated a small battery and concentrating    plant.    Yabba Goldfield    (32km north of Kilcoy); also known as the Jimna field. It    was essentially an alluvial field, and is credited with rich    returns in the early years from deposits on Jimna and Sandy    Creeks. Reef-mining followed on a small scale for some years    with two plants on the field. A few small reefs carrying fair    values have been worked in recent years.        Kilkivan    (72km by rail and 48km by road west of Gympie). On this    old goldfield, restricted but rich shallow alluvial deposits    were worked and reefing followed. There has been little gold    production for about sixty years, but a few men have been    engaged near the town and on the Gold Top provisional field,    8km distant. Copper deposits were worked to a small extent at    an early period at Mount Coora, Mount Clara    and Black Snake. Re-opening of an old cupriferous gold    lode at Black Snake in 1939 resulted in productive operations,    with crushing, tabling, flotation and cyanidation plant on the    ground, till 1949. Recently, several deposits in the area have    been the subject of Departmental investigation    by drilling.    At Tansey Creek near Goomeri, an auriferous formation had    been worked to a depth of 87m when work ceased in 1942. Recent    dewatering and sampling indicated erratic distribution of    values in the bottom workings.    Marodian Goldfield    (13km north of Kilkivan) Alluvial gold was found on Colo    Flats and at Yorkeys Hill. Little work has been done on the    field for many years.        Nanango    (209km by road north-west of Brisbane, and 27km from rail    at Kingaroy), Gold deposits near the town, at the Seven-mile    diggings (alluvial only) and also at Scrub    Paddock (32km north-east) were worked at an early stage in    the States history. The last period of marked activity    included an attempt by an English company to work a group of    auriferous copper veins at Scrub Paddock. Despite intermittent    prospecting over the wide area available, no discoveries of    note have since been made. Prospecting of small auriferous    reefs and leaders has been carried out near Emu and Possum    Creeks in the Blackbutt area without marked success. Small    deposits of silver-lead and of gold-bismuth have been worked    near Mount Langan in the same area. Proston, (116km by rail    west of Gympie), Some gold prospecting has been carried out in    the Boondooma area, some 32km west of Proston, but nothing of    importance has been recorded. Gold and antimony have been    prospected at Glenbar (40km south-west of    Maryborough).    Biggenden    (87km by rail west of Maryborough), A deposit of    magnetite at Mount Biggenden was worked intermittently for its    gold and bismuth content until 1938.    Paradise Goldfield    (13km north-west of railway at Degilbo), Stanton-Harcourt    Goldfield (18km north of Degilbo, and Mount Shamrock Goldfield    (19km west-north-west of Degilbo). These three small goldfields    were worked towards the end of last century. Apart from a small    amount of prospecting, little work has been done for many    years. A little gold was also won on the Chowey, Mount Steadman    and Gebangle fields a few kilometres further west.    In the Mundubbera    district gold prospecting was formerly carried on at    d**ehead (29km west) at Hawkwood (48km west-south-west) and at    the old Brovinia diggings (64km south-west of Mundubbera) but    no discoveries of significance have been made.    Eidsvold Goldfield    (224km by rail from Maryborough). A group of auriferous    fissure deposits was extensively worked between 1888 and 1900.    An unexpected collapse of the field followed failure of values    in the deeper levels of the principal mines. Although the reef    formations proved to be persistent in depth subsequent efforts    railed to locate workable shoots. Activity since 1906 has been    limited to intermittent small-scale operations. On St. Johns    Creek, 26km south-west of Eidsvold, large quartz lodes have    been worked spasmodically for antimony and gold.    Cracow Goldfield    (95km by road west of Eidsvold). Discovered in 1931, this    field for some years has been the only major producer of gold    in Queensland, apart from Mount Morgan. Total output of fine    gold to the end of 1974 was nearly 19 000kg most of which came    from the Golden Plateau mine. Long narrow ore-shoots in    quartz-calcite veins were worked at the Roses Pride and    Klond**e mines to depth of 40m and 45m respectively. At Golden    Plateau a zone of quartz deposition up to 76m wide and nearly    800m long occurs beneath a sandstone capping. Several irregular    tabular ore-shoots have been mined and the lowest productive    workings are at the 252m    level. Diamond drilling was successful in locating    additional ore-shoots within the mine leases.    In the     Bundaberg    district, mining for copper and gold has been carried out    extensively at the Tenningering field (108km from Bundaberg,    with Mount Perry as its centre), and Boolboonda field (90km    from Bundaberg). Gold reefs have also been worked at Reids    Creek. There has been very little mining in recent years    although prospecting is being continued by several groups. Lode    rutile has been found as shoad in the foothills of Mount Perry    and traced to limited outcrops. A little gold has been won from    a deposit at Swindon (22.5km east of Mount Perry), from    which    coarse alluvial gold was shed, but there is little    prospect of other than small-scale production.    THE STANTHORPE DISTRICT (GSQ Report 64)    Gold was first discovered at Lord Johns Swamp (Lucky    Valley Goldfield) in 1852. In 1863 rich    but limited alluvial gold was uncovered on Canal Creek.    Following close on the Canal Creek    discovery were further finds at Talgai (Darkies Flat     1863-64), Thanes Creek (1869), Pikedale    (1877), Leyburn (1872), and Palgrave (1877). Canal Creek    was an alluvial goldfield only, where as    both alluvial gold and reef gold were won from Talgai.    Thanes Creek was primarily an area of    reef mining; at Pikedale and Leyburn little or no    alluvial gold was won. Little is known of the    Palgrave field.    The period of principal production was prior to 1905.    Attempts at revival of reef mining in the    1930s were only moderately successful, and did not    survive for long. Any future prospects appear to lie in further    development or known reefs below the old shallow    workings.
    Alice River (or Philp) Gold and Mineral Field.  
    Gold was discovered in the upper reaches of the Alice    River in 1903 by the prospector thingyie. From 1904 to 1909    mining was virtually confined to the Alice Queen and Peninsula    King reefs, and since 1917 the field has received little    attention. The total recorded production from 1903 to 1917 is    3.3kg of gold from about 2800 tonnes of ore, together with 14kg    of alluvial gold. Between 1904 and 1909 the Alice Queen reef    produced about 37kg of gold from 1570 tonnes of ore, and the    Peninsula King reef about 31.1kg of gold from 632 tonnes of    ore.  
    The two reefs lie within 1.5km of each other on a    north-north-westerly line. The Alice Queen mine in the north is    in a vertical quartz reef between 1 and 2m wide and over 100m    long (Cameron, 1906). Of the two shafts, the southerly was 34m    deep in 1906. The quartz from the mullock dump contains small    grains of pyrite and stibnite. Felsite d**es trending    south-southeast cut the altered Kintore Adamellite to the west    of the workings. The Peninsula King reef is 0.5 to 1m wide. In    1906 several shallow shafts had been sunk along the line of the    reef.  
    In the Potallah Creek Provisional Gold Field  
    only one reef, the Perseverance, has been recorded. It is    situated in fine-grained schist of the Holroyd Metamorphics    about 1km west of a stock of Kintore Adamellite. According to    Cameron the reef trends north and is 75cm wide at a depth of    12m. The only recorded production is 18.26kg of gold from 593    tonnes of ore in 1903-04. A shaft was sunk at Potallah Creek in    1946; the reef at a depth of 33m is reported to have been 2m    wide with a grade of 15.6g of gold per tonne.  
    Jensen recorded a small number of gold occurrences in the    Potallah Creek area. Production of 0.16kg of gold is recorded    from Olain Creek in 1914 (probably OLane Creek, 13km    north-north-west of the Potallah Creek shaft).  
    Hamilton Gold and Mineral Field  
    A sma1l rush followed the discovery of gold by thingyie    at Ebagoola early in 1900. Gold was found farther south near    the Lukin River in the following year. Peak production was    reached in the first year when about 470g of gold, 342kg from    alluvials, was recorded. Mining virtually ceased during World    War 1 and has been sporadic since. Total production from 1900    to 1951 was 291.58kg, made up of 1371.63kg of reef gold from    34196 tonnes of ore, 682.41kg of alluvial gold, and 237.54kg    from the treatment of 19 256 tonnes of tailings.  
    Mining at Ebagoola was centred about the old townsite.    The Yarraden mining area, about 15km south-southeast of    Ebagoola, extends for 8km from the Lukin River southwards to    Spion Kop; it does not include Yarraden homestead. Gold occurs    principally in numerous quartz reefs.  
    Ball reported that the reefs in the Ebagoola area trend    roughly north along the contact between the older granite    (Kintore Adamellite), which he considered to be metamorphosed,    and the schist and gneiss to the east (Coen Metamorphics). He    believed that the reefs were related to the newer granite    (Flyspeck Granodiorite); in the Yarraden area the reefs occur    within the Flyspeck Granodiorite. In the Ebagoola area quartz    occurs as leaders, veins, or compound reefs.  
    The leaders are up to 15cm wide and occur mainly in    shrinkage cracks in the granite. Although they are of limited    length or depth, and are seldom rich in gold, most of the    alluvial deposits were probably derived from them. True fissure    reefs, such as the Caledonia and All Nations reefs, occupy    shears along the contact between the metamorphic and granitic    rocks. The compound  
    fissure veins are associated with acid d**es, or with    beds of quartzite, such as the May Queen reef.The water-table    is generally at a depth of less than 20m in the dry season, and    consequentlysulphides such as pyrite, arsenopyrite, galena, and    stibnite are found almost at the surface. Mining was generally    not profitable at grades below 47g of gold per tonne.  
    The most productive workings in the Ebagoola area were    the Caledonia, Hamilton King, MayQueen, Hit or Miss, Violet,    Hidden Treasure, All Nations, and Golden Treasure. In the    Yarraden area the two most important reefs were the Golden King    and Savannah. According to Cameron, the Golden King reef trends    roughly north, dips vertically, and ranges from 15 to 40cm    wide; it was worked over a length in excess of 300m to a    maximum depth of 65m. Mining was almost continuous between 1901    and 1915, and was resumed in 1917 and 1921.  
    Recorded production is 239.84kg of gold from 7699 tonnes    of ore. The Savannah reef lies about500m east of the Golden    King and dips steeply west. It is more than 30m long with a    steep southerly plunge. Mining was carried out to a depth of at    least 38m. Between 1901 and 1907 and in 1912 a total of 2761    tonnes of ore yielded 156.51kg of gold. Attempts to reopen the    mine in 1939-40 were unsuccessful.  
    *Minor production in 1930s included.  
    Other reefs of importance in the Yarraden area were; the    Lukin King with a total production between 1901 and 1926 of    63.73kg of gold from 1631 tonnes of ore, the Gold Mount which    yielded 2.99kg of gold from 781 tonnes of ore between 1901 and    1921, and thc Hiaki (or Haikai) which produced 39.22kg of gold    from 1622 tonnes of ore between 1909 and 1918.  
    Alluvial mining was mainly restricted to the Ebagoola    area and most of the production was before 1910. The gold was    coarse, and was derived mainly from eluvial deposits shed from    nearby reefs and leaders.  
    The Coen Gold and Mineral Field  
    was proclaimed over an area of 95km2 in 1892 and enlarged    to 480km2 in 1898. Alluvial gold was discovered at Coen in 1876    and in 1878 there was a small rush from the Palmer River, but    few miners stayed more than two weeks and the workings were    abandoned in the same year. In 1880 Chinese miners attempted to    work the alluvium without success.  
    In 1885 land was taken up for mining silver, and    machinery was erected in 1886, but productive  
    reef mining did not start until 1892. Between 1893 and    1899, 16689 tonnes of ore crushed at Coen yielded 888.1kg of    gold. Ball visited the field in 1900 and recorded mining    activity at Coen town, at The Springs 15km to the south-east,    and at Klond**e 13km north-east of The Springs.  
    According to Ball the reefs are from several centimetres    to 1.5m thick, and generally trend north-west to north, with a    steep dip. Most of them are fissure veins composed of quartz,    but a few consist of siliceous slate; some of the poorer reefs    contain pyrite or arsenopyrite.  
    The most successful mine was the Great Northern. About    1km south-east of Coen township; it has produced about    three-quarters of the gold won from the field. Other productive    reefs near Coen, which were mined mainly before 1900, were the    Daisy, Hanging Rock, Homeward Bound, Lankelly, Long Tunnel,    Trafalgar, and Wilson reefs. Between 1894 and 1899 the Great    Northern mine yielded 230.85kg of gold with a high silver    content from 4394 tonnes of ore. In 1900 activity at Coen came    almost to a standstill when the Hamilton goldfield was opened,    but gold continued to be won at Coen for many years, mainly    from the Great Northern and from the treatment of tailings with    cyanide.  
    The total recorded production of reef gold at Coen from    1892 to 1916 was about 2333kg, of which 2172.86kg came from the    Great Northern mine, including 412.4kg from the treatment of 20    000 tonnes of tailings and mullock. The total amount of ore    recorded between 1812 and 1916 was 28 185 tonnes, of which 26    234 tonnes came from the Great Northern mine. After 1910    production fell off rapidly, and in 1914 only 7 tonnes of ore    was mined.  
    The Great Northern mine was reported to have been worked    to a depth of 150m, but little work was done at that depth. The    north end of the No.4 level, somewhere below 54m, was reported    in 1909 to be 78m from the shaft. The reefs in the lower levels    ranged in width from 75cm to 1.2m. After 1909 production came    from small rich leaders in the hangingwall and footwall above    the No.3 level possibly at 54m. Little is known of the mine    after 1914, but attempts were made to reopen it as late as    1949.  
    Mining was carried out at The Springs, 15km south-east of    Coen, from the early 1890s to about 1901. The main reefs were    the Westralia, where 455 tonnes of ore were crushed for 19.56kg    of gold in 1901, the Goolha Goolha, the Rothwell, and the    Sirdar, where 207 tonnes of ore produced 13.41kg of gold beween    1898 and 1901. This part of the Coen Field was abandoned during    the rush to the Hamilton goldfield in 1900 and 1901.  
    At the Klond**e, 13km north-east of The Springs, the    Springfield reef yielded about 40kg of gold from 366 tonnes of    ore between 1898 and 1902. The Klond**e lodes trend roughly    north and occur in schist and gneiss of the Coen Metamorphics    near their contact with the Lankelly Adamellite.  
    The workings at Coen and The Springs lie within or    adjacent to the Coen Shear Zone. The zone extends for about    27km south-east of Coen and lies largely within the Lankelly    Adamellite and along its southwest margin. The schistose    sheared adamellite contains a little pyrite and arsenopyrite.    Quartz reefs are common along the shear zones, and in the south    they are up to 5km long and 100m wide. Most of the mullock dump    at the Great Northern mine, which lies in the shear zone,    consists of a breccia composed of fragments of silicified    granite set in a matrix of white quartz; the country rock is    sheared Lankelly Adamellite. The quartz and gold were probably    deposited from hydrothermal fluids introduced after the rocks    were sheared.  
    In the Blue Mountains,  
    40km north of Coen, which are not included in the Coen    Gold and Mineral Field, gold was mined from some time before    1934 until 1951. The gold occurs in narrow quartz veins in    granite. The total recorded production in 1935, 1938-46, and    1948-51 is 33.53kg of gold from 950 tonnes of ore; of this    17.5kg from 593 tonnes came from mines operated by Blue    Mountains Gold N.L., principally the Golden Ladder and the    Convict. One of the other major producers was the Yarraman    mine. No mines were operating in 1967.  
    A small number of leases have been held in recent years    in the Leo Creek area, 30km north-east of Coen, but no    production is recorded. In the Nullumbidgee area a few    kilometres to the north 3.5 tonnes of ore yielded 0.40kg of    gold.  
    The small Lochinvar Provisional Goldfield on Tadpole    Creek, about 18km southwest of Coen, is situated in Kintore    Adamellite. The only recorded production is 2.2kg of gold from    50 tonnes of ore in 1904.  
    Rocky River Gold and Mineral Field  
    Alluvial gold was discovered in the Rocky River, 32km    north-east of Coen, in 1893 by Lakeland. Reef mining began on    Neville Creek (location unknown) in 1896 and the field was    proclaimed in 1897. Between 1896 and 1901, 951 tonnes of ore    yielded 142.64kg of gold. Interest waned in 1901 following the    discovery of the Hamilton goldfield, but it revived for a short    time in 1910 and 1911 when 57 tonnes of ore yielded 8 77kg of    gold. Jack noted that only four people lived on the field in    1914, and there were no returns that year. No mines were    located in 1967.  
    Hayes Creek Provisional Gold Field.  
    Jack recorded traces of gold in Hayes Creek, 60km    northeast of Coen, during his 1880 expedition, and the area was    later visited by thingyie and Campbell during a prospecting    journey to Lloyd Bay in 1907. Shepherd records that the Hayes    Creek field was discovered in 1909, but this probably refers to    the start of reef mining on the Golden Gate claim.  
    Production has been small and spasmodic. In 1909    production from the Golden Gate claim was 37 tonnes of ore    which yielded 6.81 kg of gold and a further 1.71 kg on    cyanidation. In 1911 production from the field was 3.18 kg of    gold from 21 tonnes of ore. Production in 1914 was  
    1.14kg of reef gold and 0.37kg of alluvial gold. The    field was deserted in 1915. Some prospecting continued until    1938, and between 1938 and 1942 some 150 tonnes of ore were    crushed for a yield of about 6kg of gold. In the early 1950s    small parcels of ore are reported to have yielded between 80    and 120g of gold to the tonne, and one 4-tonne crushing    returned 0.2kg of 850-fine gold.  
    Shepherd noted four sets of workings at the main centre    at Buthen Buthen. At the Theodore lease a quartz reef between    30 and 35cm wide was exposed for 65m, with a strike of 140 and    dip of 47 to the south-west; the reef contained a little pyrite    and arsenopyrite. The 20cm reef on the Diana Lease contained    pyrite and a little free gold; on the Campbell and Buthen    Buthen leases Shepherd saw only shallow trenches and small    shafts. At Companimano Creek, 6km south-south-west of Buthen    Buthen, a quartz reef 90cm to 1.2m wide contained gold, galena,    pyrite, and arsenopyrite.  
    The reefs in the Hayes Creek field are situated in a    northerly trending shear zone in Kintore Adamellite; the    valleys of the Lockhart and Nesbit Rivers follow this zone. In    1964 the valley of the Nesbit River between Buthen Buthen and    Kampanjinbano (Companimano?) Creek was investigated as an    alluvial gold prospect, and an almost enclosed basin on Leo    Creek, 8km southwest of its junction with the Nesbit River, was    also tested, but little gold was found.  
    Wenlock Gold and Mineral Field.  
    Gold was discovered in 1892 at Retreat Creek, a tributary    of the Batavia (Wenlock) River and later at the site of    Bairdville. Further prospecting, mainly between 1905 and 1911,    disclosed several small alluvial deposits at Downs Gully,    Choc-a-block Creek, and other nearby sites. The amount of gold    produced up to 1910 has been estimated at 93 kg. In 1910 an    aboriginal prospector named Pluto located a large lead at the    base of the Mesozoic sediments overlying the Kintore    Adamellite; the locality became known as Plutoville and was    rushed by miners from Coen and Ebagoola. According to Fisher    the early workings covered an area of about 350m2, and    consisted of shallow alluvium and small reefs, which were    worked to a maximum depth of 5m. Morton mentioned a shallow    lead of cemented wash with rich gutters at the workings. Total    recorded production from Plutoville is estimated at 190kg of    gold. The Main Leader about 5km north-east of Plutoville was    discovered in 1922 It consists of a narrow quartz reef with    payable gold for over 300m along strike. The discovery became    known as Lower Camp and later as Wenlock. Fisher described the    Main Leader as a north-westerly trending fissure reef, with a    few cymoid loops, which dips at 60 to the south in the north    and 35 in the south. In the south it is cut by the Main Reef,    a quartz reef over 6m wide.  
    The average width of the Main Leader is 20cm, and its    walls are slickensided. It contains free gold to a depth of at    least 100m, or about 30m below the water-table. Connah stated    that the Main Leader is composed of quartz with a distinctive    white and blue banding, and ranges in thickness from 2 to 45cm.    Short rich shoots with a northerly pitch are common, and coarse    particles of gold are evenly distributed in the reef, with a    few rich local concentrations. Fisher estimated the average    grade at about 50g of gold per tonne. The Main Leader occurs in    Kintore Adamellite and is overlain by Mesozoic sediments and    alluvium. The deep leads at the base of the Mesozoic sediments    on the west side of the Main Leader also contain gold. Connah    found that the main deep lead was a narrow rich gutter which    spread out into a wide drainage channel trending    west-south-west.  
    He has suggested that the extension of the channel beyond    the workings is down thrown by a fault trending south-east.    This may be the continuation of a post-Cretaceous    south-easterly trending fault, downthrown to the west, which    was mapped in 1967, 13km south-east of Wenlock. Total    production from Lower Camp is estimated at 1089kg.  
    The Wenlock field was deserted during World War II. The    claims along the Main Leader were amalgamated in 1946, but    operations ceased again in 1952, partly as a result of flooding    in 1950. Prospectors have continued to be active around the    field, and in 1964-65 it is reported that 87.09 kg of gold were    obtained from 2 tonnes of picked specimen stone.  
    Gold was first produced from the Claudie River Gold and    Mineral Field  
    in 1933, the field was proclaimed in 1936. The gold was    mined at Iron Range, Scrubby Creek, and Packers Creek. Shepherd    (1939) gives the total production from 1935 to June 1938 as 17    331kg of gold from 6104 tonnes of ore and 1067 tonnes of    tailings. Iron Range produced 13 421kg from 3753 tonnes of ore,    Scrubby Creek 33.65kg from 1984 tonnes of ore and 1067 tonnes    of tailings, and Packers Creek 544kg from 376 tonnes.  
    The largest reef, Gordons Iron Range, yielded 1084kg of    gold from 2568 tonnes of ore. The average yield from the rest    of the field was 162g per tonne. The field closed in 1942 for    the duration of the war. A little mining was carried out after    1945, and between 1950 and 1953 the Cape York Development Co.    attempted without success to develop a few of the mines at    Iron  
    Range. Total recorded production from the field between    1934 and 1942 is 333.12kg of gold from 17100 tonnes of ore and    3221 tonnes of tailings. Production since the War has been    small, but a little gold is still obtained from a mine at    Packers Creek. At Iron Range the gold occurs in quartz veins    and lodes in schist of the Sefton Metamorphics,  
    while at Scrubby Creek and Packers Creek the gold-bearing    lodes and veins are in the Weymouth Granite. At Iron Range, the    deposits are large but low grade in the iron-bearing schist,    but small and rich in the adjacent iron-free schist (eg. the    Iron Range reef); the reefs occur along fault lines in the    schists.  
    South-east of Iron Range some of the reefs are parallel    to the schistosity and others have components both along and    across the schistosity; short ore shoots occur where the reefs    intersect.  
    North of Iron Range the lodes, such as the Peninsula Hope    and Northern Queen, are composed of crushed sericite schist    with quartz stringers. Broadhurst & Rayner suggested that    in the primary zone the ore shoots will prove to be lenses of    silicified schist impregnated with sulphides, chiefly    arsenopyrite. Rayner noted the discovery of a wide body of    sulphide ore on the Peninsula Hope lease at Iron Range, and a    CSIRO report on the treatment of arsenical gold ore from the    Peninsula Hope mine gave the head assay of the ore as 18.2g of    gold, 1.8g of silver, 4.4% arsenic, 20 7% iron, 9.79% sulphur,    and less than 0.05% copper. The sulphides are arsenopyrite and    pyrite, with some altered pyrrhotite and traces of    chalcopyrite, sphalerite, and gold. The gold and sulphide    minerals at Iron Range may have been introduced by the Kintore    Adamellite, as elsewhere in Cape York Peninsula, or by the    Weymouth Granite.  
    Gold was discovered in the Possession Island Gold and    Mineral Field  
    in Torres Strait in 1896, and production began in 1897;    Jackson described the mines he visited in 1901. All the    workings are near the north-west coast, east and north-east of    the monument to Captain Cook. Mining was carried on until 1906    when the leases were abandoned. Attempts were made to reopen    the workings in 1919, and again in 1934-35, but without    success. Recorded production between 1897 and 1905 is 155.42kg    of gold from 7245 tonnes of ore, including some returns for the    Horn Island Gold and Mineral Field. Four tonnes of ore yielded    0.09kg of gold in 1919.  
    Jackson noted that the main workings were located on two    almost vertical reefs about 230m apart, which trend    south-south-east. The reefs consist of quartz veins, up to    several centimetres thick, in a matrix of fractured and altered    welded tuft; the veins contain a small quantity of sulphide    minerals. Jackson also noted severa1 shafts and small cuts, and    records that a sample of ore, composed of vein quartz with    galena and pyrite, assayed 57.95 g of gold and 33.9g of silver    to the tonne.  
    Copper-staining associated with limonite has been noted    in the chloritized and silicified welded tuff northeast and    southwest of the abandoned workings. Northeast of the workings    some galena and pyrite have been observed in joints. Alluvial    gold was discovered in the eastern part of Horn Island in 1894    and the Horn Island Gold and Mineral Field was proclaimed the    same year. Reef mining began in 1895 or 1896 in an area of    about 0.5km2, 1km inland from the east coast. The mines are    situated in altered and silicified porphyritic microgranite to    the south of a stretch of sandy alluvium. Recorded production    is 31.07kg of alluvial gold between 1894 and 1896, and 176.67kg    of gold from 16 904 tonnes of ore between 1896 and 1900. The    recovery of gold declined sharply in 1900, and by 1901 the    field was almost deserted.  
    Most of the reefs are steeply dipping and trend    east-southeast or southeast. They consist of closely spaced    quartz veins in altered microgranite. Sulphide minerals were    found in many of the reefs only 3m below the surface. Pyrite    and galena are the most common sulphides, but some of the reefs    also contain sphalerite and two contain chalcopyrite. The    average yield decreased from 30g per tonne in 1896 to 20g per    tonne in 1900. Sporadic production continued on a small scale    until 1919, and prospecting went on at intervals until    1966.  
    Australian Selection Pty Ltd drilled three holes to    depths of about 75m in 1963, but did not consider the prospect    payable; an ore concentrate assayed in 1961 yielded 750g of    gold and 440g of silver per tonne. In 1965 overburden was    removed and 120m3 of alluvium were taken for sampling but the    results are not known.  
    A visit to the mines in 1968 revealed a large open cut,    probably on the Welcome reef, about 100m long by 50m across,    and a smaller open cut, in the vicinity of the Dead Cat claim,    with a timbered shaft in the bottom. In the smaller open cut    the porphyritic microgranite is yellowish green and intensely    altered; it is cut and silicified by numerous quartz veins. The    altered rock contains small patches of sulphide minerals. In    the larger pit the microgranite is less altered and contains    fewer quartz veins; the sulphide minerals occur in small veins.    Pyrite and galena are common, and chalcopyrite and a little    wolfram(?) were also observed.  
    Elsewhere, minor amounts of gold are reported to have    been won on Hammond Island between 1907 and 1909, and possibly    until 1919, and on Thursday Island in the 1930s.  
    Extract from Bureau of Mineral Resources Bulletin No.    135:  
    CORDALBA AREA  
    Mining activity is recorded to the north-west of Cordalba    on the southern side of the Burnett River. The area has been a    small producer of gold and silver.  
    History  
    No official records are available prior to 1933, but it    is reported that the Wild Irishman Mine was worked as early as    1883. Mount Ideal, near Cordalba, was prospected about 1895.    Most mining activity took place in the 1930s.  
    Gold  
    Gold mineralization is recorded from three mines -Wild    Irishman, Bull Ant, and Mount Ideal. The Wild Irishman Mine, 13    miles north-west of Cordalba, was first worked about 1883, but    was soon abandoned. The lease was taken up again in 1933. The    country rock consists of very altered, sheared sediments    (Biggenden Beds) with quartz veins, intruded by aplite and    granite of probable Permian to Triassic age. The intrusive    rocks are sheared. Discontinuous reefs consist of vitreous    quartz with minor iron oxide and arsenopyrite. They range in    thickness from 18 inches to 2 feet. The reef system is parallel    to the Electra Fault and appears to be cut off in depth by a    parallel fault. In 1934, 80 tons of ore yielded 51.2oz of    gold.  
    The Bull Ant Mine, 11 miles north-west of Cordalba, was    prospected in the late 1890s. The reef consists of quartz and    iron oxide; the country rock is sheared sediments (Biggenden    Beds) with quartz veins. The mine is on a very wide shear zone.    Low gold and silver values are recorded.  
    Mount Ideal Mine is on the west bank of Woocoo Creek, 2    miles south-west of Cordalba. The reef was probably worked    about 1895. The country rock consists of altered sediments    (Brooweena Formation) containing masses and veinlets of quartz    with pyrite, arsenopyrite, and a little gold. Mineralization is    confined to a faulted area of 40 feet by 100 feet. Gold values    were found to be associated with siliceous material which    formed only a small part of the mineralized zone. No workable    ore bodies were located.  
    THE MUNDUBBERA 1:250 000 SHEET AREA  
    Three proclaimed mining fields and one provisional mining    field lie within the Sheet area. Gold was also found in a    number of other areas and some gold deposits were located    outside proclaimed fields. Most of the gold was mined from    reefs; however, alluvial gold was won from the Hungry Hill    -McKonkey Creek -Coonambula area. Except for the lodes of the    Cracow area, virtually all the gold occurrences are associated    with the granitic rocks of the Permo-Triassic Rawbelle    Batholith.  
    The auriferous quartz reefs occur in these rocks or in    the adjacent country rocks. They are largely confined to the    eastern and south-eastern parts of the batholith and the nearby    Eidsvold Complex. The reefs occur in the less acidic phases,    which may represent the oldest parts of the batholith. They do    not appear to occur in any preferred structural orientation.    Many of the reefs in hornfelsed country rocks are associated    with acid or intermediate dykes and occur relatively near the    contact with the batholith. Except for the Cracow lodes, the    mineralization has been of minor importance.  
    Cracow Mining Field  
    Payable gold was discovered in 1931 by C. Lambert and    partners, working under an incentive from the Government.    Several mining companies operated the field and gold was won    from the Golden Plateau, Golden Mile, Roma North, Roses Pride,    Golden West, Dawn, Lamberts Surprise, Revival, and Klondyke.    All but one mine had closed by the end of 1951. The Golden    Plateau mine, operated continuously by Golden Plateau N.L.    since 1933, is the only major producer and for many years    Golden Plateau and Mount Morgan have been the only important    gold producers in Queensland.  
    The total production to the end of 1972 was 1 453 144    tonnes of ore milled for a yield of 18314.33kg of gold and 19    036.29kg of silver. Average grade is approximately 12 9 per    tonne. Annual production figures are listed in thee    table.  
    The gold deposits occur in andesitic volcanics of the    Lower Permian Camboon Andesite. The regional strike is    north-north-west and the dip 25 west. The volcanics    unconformably overlie acid volcanics of the Carboniferous    Torsdale Beds which are intruded further to the east by Upper    Carboniferous granitic rocks and the Permo-Triassic Rawbelle    Batholith. The unconformity is exposed approximately 4km east    of the Golden Plateau mine. Rhyolite dykes are associated with    some of the gold mineralization; the remainder is localised by    fault zones. The age of the dykes and the faulting is not    known; however, a Late Permian to Early Triassic age of    mineralization is considered most likely.  
    Although several small lodes have been worked on the    Cracow field, gold deposition was confined mainly to the Golden    Plateau lode system which Brooks (1965) considered to form a    faulted link between the White Hope lode on the west and the    Golden Mile lode on the east.  
    Within the Golden Plateau lode, irregular tabular ore    shoots have been mined discontinuously over a length of 693m, a    width of up to 15m. and to a depth of 252.5m. The lode system    is terminated abruptly on the west by the north-north-west    striking Golconda Fault and on the east by a fault of similar    strike. These faults were probably initiated prior to ore    deposition, but post-ore movement has also taken place.  
    The gold occurs as gold-silver alloy in a quartz gangue.    Primary gold is seldom visible to the naked eye, even in high    grade ore. Small quantities of sphalerite, chalcopyrite,    pyrite, galena, bornite, and hessite are present.  
    The Golden Plateau lode is regarded as a hydrothermal    replacement deposit. The mineral assemblage and gold fineness    suggest that ore deposition took place near the base of the    epithermal zone. Ore deposition seems to have been controlled    by faults, and in many places appears to be related to rhyolite    dykes. Brooks notes that nearly all ore shoots have one wall    defined by a fault plane or fault zone. In the eastern section    of the mine, ore shoots often occur adjacent to a rhyolite    dyke, or they may be confined between a fault and a rhyolite    dyke. The mineralization is Post-Lower Permian (Camboon    Andesite) and pre-Jurassic ( Precipice Sandstone).  
    Between 1960 and 1971 diamond drilling by the Queensland    Department of Mines on behalf of Golden Plateau N. L. resulted    in the discovery of a major oreshoot in the Golden Plateau area    and the proving of depth extensions of the main Roses Pride    oreshoot. This major oreshoot has been the principal    contributor to the production of gold and silver from the    Golden Plateau mine since 1965. In 1969 Golden Plateau N. L.    deepened the Roses Pride main shaft and drove a level a    distance of 208.5m at a depth of 74m to follow up drilling    results. In view of the marginal grade of the ore the company    did not proceed with production.  
    Eidsvold Mining Field  
    Gold was discovered in the Eidsvold area in 1858, but    early activity was spasmodic. The first prospectors claim was    taken out in late 1886 over an area of land near the wor kings    at Eidsvold head station on the north bank of the Burnett    River. Initially . the mining activity was centred on Mount    Rose ( later Eidsvold) and Craven Town, 5.6km south-west of    Mount Rose on the Burnett River. The Eidsvold Goldfield, which    included an area of 28.5km centred on Eidsvold, was proclaimed    in 1887.  
    Gold was mined continuously in the field from 1887 to    1914, with the peak production in the period 1893 to 1900. The    maximum gold produced in one year was 426.80kg in 1892. With    the discovery of payable gold at Cracow in 1931, interest in    the Eidsvold field was renewed, and gold was mined    intermittently until 1950. The total recorded production    between 1886 and 1950 is 3011.91kg of gold from 90 025 tonnes    of ore.  
    The mineralization occurs in the granitic rocks of the    Upper Permian to Lower Triassic Eidsvold Complex and in    isolated areas within adjacent Lower Permian(?) hornfelsed    sediments and volcanics of the Nogo Beds. The gold occurs in    quartz reefs. Hydrothermal solutions from the reefs have    resulted in the kaolinization of feldspars up to a few metres    from the contacts.  
    The main reefs, Mount Rose, Stockman or Lady Augusta,    Craven, and Maid of Erin, are all located in the Mount Rose    area, just west of Eidsvold. Rands noted that the majority of    reefs strike north-west to north-north-west and dip easterly at    angles from 20 to 45 . The reefs consist of quartz and minor    associated pyrite, chalcopyrite, and sphalerite (Maid of Erin    reef), stibnite and cassiterite (Stockman reef), galena (All    Nations reef), molybdenite ( Moonlight reef), and    arsenopyrite.  
    The Mount Rose reef strikes east-north-east and dips 25    south-easterly. Rands reported the reef to average 75 cm in    width, and consist of layered quartz, and interbedded clayey    material, with the best gold occurring in the quartz.  
    The Lady Augusta or Stockman reef strikes north-west and    dips 22 north-east, with the principal part of the reef    dipping 65. Rands noted that the Empress Shaft on the Lady    Augusta reef line was sunk to 247m, cutting through the    probable extension of the Mount Rose reef at a depth of 119m.    The Lady Augusta reef averaged 9 cm in width, but varied at    depth from 15 to 20 cm. Generally, the gold occurs in hanging    wall leaders in association with quartz and calcite. Rands also    noted the occurrence of massive stibnite in a shaft south-east    of the Augusta mine (523m due south of the court house and 91m    north-east of the outcrop of the Lady Augusta reef).  
    Rands reported that the north-west-striking and shallow    dipping Craven reef has a thickness of 18 to 20 cm and an    average gold content of 122g per tonne. The Maid of Erin reef    strikes north-west with a north-easterly dip and is    approximately 1.2m wide. It contains little quartz and occurs    at the contact between granite and diorite. The Lady Minerva    reef. striking north-east and dipping approximately 27    south-east has an average width of 8 cm in the underlie shaft.    Rands described the Lady Rose reef, which outcrops 362m north    of the outcrop of the Mount Rose reef, as a 30 cm wide quartz    vein with copper staining in an altered granitic formation    within the granite.  
    During the early years of development of the Eidsvold    field, prospecting parties discovered gold occurrences in    several adjacent areas. The Queen Bee and Mount Jones    prospecting claims were granted in 1887 for areas on the    Burnett River, approximately 14.5km north of Eidsvold head    station. Considerable development was undertaken, but the only    recorded production was that for 1889 when a crushing of 10.16    tonnes of ore yielded 1.41kg of gold.  
    The Lady Amy claim, approximately 1.2km west of Eidsvold,    was located on the line of a fissure in granite marked by a    white kaolinized band striking 80 and dipping 15 south. In    contact with this kaolinized band is a brown limonitic band up    to 1.8m thick, which contains little quartz, but hosts the gold    mineralization. A sample from the south-easterly dipping gold    bearing formation yielded 4g of gold per tonne.  
    St John Creek Mining Field  
    Gold was discovered at St John Creek in 1888. This    discovery, at first in alluvium and later in reefs, produced a    drift in population from the dwindling Craven Town areas to the    St John Creek area. The 5km2 goldfield situated 26km south-west    of Eidsvold, was gazetted in 1890.Few reports on the area    exist. The two main mines on the field, Perseverence and    Burnett Squatter, were worked intermittently between 1888 and    1937. The total recorded production from the field since 1888    is 313.03kg of gold from 15 669 tonnes of ore milled. Peak    production was achieved in 1890 when 98.35kg of gold were    obtained from milling 7574 tonnes of ore.
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Minerva Reefs - euvolution.com